<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<title>web site</title>
	</head>
	<body>
		<script>
// 			var num3 = 333;
// 			function fn(){
// 				var num1 = 111;
// 				num2 = 222;
// 				console.log(num3);
// 			}
// 			fn();
// 			console.log(num1);
// 			console.log(num2);
// 			console.log(num3);
// 			
// 			{
// 				var aaa = 1;
// 			}
			
			function fn(){
				var a = b = c = 1;
				var d = 1;e = 2;f = 3;
				var g = 1,h = 2,i = 3;
			}
			fn();
			console.log(b);
			console.log(c);
			console.log(e);
			console.log(f);
			// console.log(a);
			// console.log(h);
			// console.log(i);
		</script>
	</body>
</html>